12252157 has 4 divisors (see below), whose sum is σ = 12260160. Its totient is φ = 12244156.

The previous prime is 12252151. The next prime is 12252179. The reversal of 12252157 is 75125221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12252157 - 2⁷ = 12252029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12252151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907 + ... + 5032.

It is an arithmetic number, because the mean of its divisors is an integer number (3065040).

Almost surely, 2^12252157 is an apocalyptic number.

It is an amenable number.

12252157 is a deficient number, since it is larger than the sum of its proper divisors (8003).

12252157 is an equidigital number, since it uses as much as digits as its factorization.

12252157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8002.

The product of its digits is 1400, while the sum is 25.

The square root of 12252157 is about 3500.3081292938. The cubic root of 12252157 is about 230.5353440280.

Adding to 12252157 its reverse (75125221), we get a palindrome (87377378).

The spelling of 12252157 in words is "twelve million, two hundred fifty-two thousand, one hundred fifty-seven".